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Cooperative Patent Classification (CPC)

The Cooperative Patent Classification (CPC) is an
extension of the IPC and is jointly managed by the EPO and the US Patent and Trademark Office. It is divided
into nine sections, A-H and Y, which in turn are sub-divided into classes,
sub-classes, groups and sub-groups. There are approximately 250 000
classification entries.

General tagging of new technological developments; general tagging of cross-sectional technologies spanning over several sections of the IPC; technical subjects covered by former USPC cross-reference art collections [XRACs] and digests